1420017870 has 32 divisors (see below), whose sum is σ = 3472349472. Its totient is φ = 371526272.

The previous prime is 1420017869. The next prime is 1420017887. The reversal of 1420017870 is 787100241.

It is a super-2 number, since 2×1420017870² = 4032901502238673800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444957 + ... + 448136.

It is an arithmetic number, because the mean of its divisors is an integer number (108510921).

Almost surely, 2^1420017870 is an apocalyptic number.

1420017870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1420017870 is an abundant number, since it is smaller than the sum of its proper divisors (2052331602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420017870 is a wasteful number, since it uses less digits than its factorization.

1420017870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893156.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 1420017870 is about 37683.1244723683. The cubic root of 1420017870 is about 1123.9955795514.

The spelling of 1420017870 in words is "one billion, four hundred twenty million, seventeen thousand, eight hundred seventy".